Police say they will not be pressing charges against former ACT Party MP David Garrett after investigating allegations of perjury.
Mr Garrett quit Parliament last year after revelations he used the identity of a dead baby to obtain a false passport.
Waitemata police were investigating statements Mr Garrett made to the courts in 2005 when he appeared on a charge for passport fraud.
He was discharged without conviction, but without declaring an assault conviction in Tonga from 2002.
When this became public last year, Mr Garrett said he was challenging the Tongan conviction through the courts there, which is why he did not declare it.
Police say they have established there was no criminal offending at that time and there are no valid reasons for bringing a charge of perjury against him.
They say the matter has been subject to a thorough investigation and legal review.